Results 111 to 120 of about 2,722,837 (288)
Generating Helical Polymorphic Beams Using Dielectric Metasurfaces
Laser &Photonics Reviews, EarlyView.Helix‐shaped polymorphic beams are optical fields whose intensity maxima spiral around the propagation axis, enabling particle manipulation through attractive or repulsive forces. Traditionally requiring expensive spatial light modulators, metasurfaces now provide a compact, cost‐effective alternative. This work demonstrates general helical polymorphic
Maryam Setareh +3 more
wiley +1 more source
, 2020 Η k-γενίκευση του συμβόλου του Pochhammer έδωσε τη δυνατότητα ορισμού της k-Γάμμα συνάρτησης κι εξ αυτής, τη γενίκευση των συναρτήσεων που περιέχουν τη Γάμμα συνάρτηση. Η παρούσα διπλωματική εργασία έχει ως θέμα τις συναρτήσεις k-Bessel W_(ν,c)^k (x), k>
Δρυλεράκη, Αμαλία
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Kernel Bounds for Parabolic Operators Having First‐Order Degeneracy at the Boundary
Mathematische Nachrichten, EarlyView.ABSTRACT We study kernel estimates for parabolic problems governed by singular elliptic operators ∑i,j=1N+1qijDij+cDyy,cγ+1>0,γ=qN+1,N+1,$$\begin{equation*} \sum _{i,j=1}^{N+1}q_{ij}D_{ij}+c\frac{D_y}{y},\qquad \frac{c}{\gamma }+1>0, \quad \gamma =q_{N+1,N+1}, \end{equation*}$$in the half‐space R+N+1={(x,y):x∈RN,y>0}$\mathbb {R}^{N+1}_+=\lbrace (x,y ...
L. Negro, C. Spina
wiley +1 more source
MATLAB GUI for computing Bessel functions using continued fractions algorithm
Revista Brasileira de Ensino de FísicaHigher order Bessel functions are prevalent in physics and engineering and there exist different methods to evaluate them quickly and efficiently. Two of these methods are Miller's algorithm and the continued fractions algorithm.
E. Hernández +2 more
doaj +1 more source
Van der Corput inequalities for Bessel functions
, 2014 In this note, we offer some log-concavity properties of certain functions related to Bessel functions of the first kind and modified Bessel functions of the first and second kinds, by solving partially a recent conjecture on the log-convexity/log ...
Baricz, Árpád +2 more
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Macromolecular Rapid Communications, EarlyView.The cononsolvency of poly(dimethyl acrylamide‐co‐hydroxyethyl acrylamide) copolymers in water‐acetonitrile mixtures enables the synthesis of hydrogels with finely tuned porosity. Optimized for droplet‐based microfluidics, this approach facilitates the fabrication of porous microgels with tunable mechanical and diffusion properties, offering precise ...
Maria I. Pieper +4 more
wiley +1 more source
On the Regular Integral Solutions of a Generalized Bessel Differential Equation
Advances in Mathematical Physics, 2018 The original Bessel differential equation that describes, among many others, cylindrical acoustic or vortical waves, is a particular case of zero degree of the generalized Bessel differential equation that describes coupled acoustic-vortical waves.
L. M. B. C. Campos +3 more
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Introduction to Bessel functions
, 1958 A full, clear introduction to the properties and applications of Bessel functions, this self-contained text is equally useful for the classroom or for independent study.
Bowman, Frank, Bowman, Frank, 1891-
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Mathematical Methods in the Applied Sciences, EarlyView.A highly accurate numerical method is given for the solution of boundary value problem of generalized Bagley‐Torvik (BgT) equation with Caputo derivative of order 0<β<2$$ 0<\beta <2 $$ by using the collocation‐shooting method (C‐SM). The collocation solution is constructed in the space Sm+1(1)$$ {S}_{m+1}^{(1)} $$ as piecewise polynomials of degree at ...
Suzan Cival Buranay +2 more
wiley +1 more source
Application of Bessel functions
, 2016 The purpose of this work is the introduction to the theory of Bessel differential equation and Bessel functions and its application to the problem of the vibration of a circular plate.
Lorenczyk, Jiří
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